An excellent platform puzzle game. You have to collect all treasure chests spread out over a grid of 7x7 screens. You can rotate a screen when you're in a platform corner. The catch is that you can only pick up treasure chests when you are aligned with the treasure.

A great game, although I think it's sorely missing an in-game map or radar. It's a little too difficult to navigate the maze without any map (I used this map), and all the rotating makes it extra disorientating. Btw you have to collect 49 treasures which is 98%, at first I was wandering aimlessly looking for that last 100% but the last one is located after the exit.

“It is practically impossible to teach good programming style to students that have had prior exposure to BASIC. As potential programmers, they are mentally mutilated beyond hope of regeneration.”(E. W. Dijkstra)